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############################################################################
#
# File: itrcfltr.icn
#
# Subject: Program to filter trace output
#
# Author: Ralph E. Griswold
#
# Date: July 14, 1997
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program filters trace output. If there are command-line arguments,
# they are taken as procedure names, and only those lines with those
# names are written. If there are no command-line arguments, all lines
# are written.
#
# The names of procedures to pass through can be given in a "response"
# file as accepted by options(), as in
#
# itrcfltr @names <trace_file
#
# where names is a file containing the names to be passed through.
#
# The following option is supported:
#
# -a list all trace messages; overrides any procedure names
# given
#
############################################################################
#
# See also: options.icn
#
############################################################################
#
# Links: itrcline, options
#
############################################################################
link itrcline
link options
$define CountWidth 10
procedure main(args)
local line, name, selected, opts
opts := options(args, "a")
selected := set(args)
if (*selected = 0) | \opts["a"] then # if -a or no names produce all
every write(itrcline(&input))
else {
every line := itrcline(&input) do {
line ? {
move(21) | break # line after trace output?
tab(many('| ')) # depth bars
name := tab(upto('( ')) # procedure name
if member(selected, name) then write(line)
}
}
}
end
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